Köflach Seasonal Pollution
Köflach usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in May. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Steiermark, Austria.
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Average EPA AQI
21
Rank 44 of 68 cities by average AQI
PM2.5
n/a
ug/m3 annualized city average
Seasonality
January
Cleanest: May
Health indicator
n/a
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Köflach
29
23
29
20
13
17
17
15
16
24
25
23
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Köflach, the current global analytics build covers 294 daily rows from 2024-01-01 to 2024-12-31. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.